MS-DOS ended with Windows NT. It used file command.com to interpret all DOS commands. Win 2000, XP, Vista use a DOS Shell which emulates DOS but is not really DOS.
DOS is just the operating system just like Windows XP. DOS SHELL is a program in DOS in which you can browse files and open them, etc. Just generally an easier way to move around the DOS operating...
DOS is a generic term for any operating system booted off a disk - during the time the term was common, most systems actually did not run off of a disk, but were built into ROM or used some form of...
BIOS refers to (Basic Input Output System) it is responsible for booting of your system while DOS(Disk Operating System) is an operating system that user uses by entering commands in command...